Steam boiler



A. SPYER STEAM BOILER Nov. 17, 1925.

Filedreb. 14,;925" 4 sheets-sheet 1 d) 4. 4 O *1j I IN VEN TOR.

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A. SPYER STEAM BOILER Nom 17, i925- Filed Feb.\ 14, 1925 4 Sheets-Sheet 5 Cn W NVENTOR;

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ATTORNEYS.

Nov. 171, l925- A.SPYER STEAM BOILER Filed Feb. 14, 4 Sheets-Sheet VVENTR.

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50 parts in the' several views.

Patented Nov. 17, 1925.

uN'irfi-:n STATES` PATENT y orifice.

ATHUR SIPYER, OF LONDON, ENGLAND, ASSIGNOR T 'THE BABC'OCK & WILCOX IPANY, OF BAYONNE-NEW JERSEY.

A C:ORPORA'LIONl OF NEXV JERSEY.

STEAM noires.

Application file-d February To 4all whom t may concern.'

' Be it known that l, An'riirii; Srii-m, a .sub- -je'et ofthe King of Great Britain, and resident of No. 13c Hyde Park ,h lansions, Maryl- 6 ebone'Road, Lon on, England, have invented certain new and useful Improvements in Steam Boilers, for which I have tiled appliA cation in yGreat. Britain, Serial No. 1,259, Jan. 16, 1924, and of which the following is a specification. y

My present invention relates to steam boilers, particularly boilers provided with both superheaters and reheatersin whichV it is desirableto vhave not only a compact ar- A rangement, but. one in which the degree of reheating may be controlled.

My invention will bebest understood from the following description and the ani nexed drawings, in which Fig. 1 isa vertical 2Q section of a tion; Fig. 2 is boiler shown in a vertical elevation of the Fig. 1; Fig. 3 is a rear elevation of Fig.' 2, with a portion qi the, boiler shown in section on line 3-3 o Fig. 2.5 QFigS- fh vertical sectional view of a double boiler embodying. my invention.

Like 'I reference characters indicate like the arrangement shown in Figs. 1, 2 and'3, the boiler has a furnace i chamber 10 over which is placed' a lower bank 11 ofhorizontally inclined water tubes Referring to 55 and spaced therefrom vertically an upper bank l12,-.witl'i the tiibes'parallel-to those of the bank 11.- The lower bank 11 has downt'ake headers 13 and uptake headers 14 connected rcspc- 40, tively by-pipes 15 'and 16 with av steam and watci'drum 17, the pipes V15 and 16 being outside of the setting, in the illustrative einbodiment. l

The upper bank 12 has downtake headers 18 and uptake tively by nipples -20 and tubes 21 with the steanrandwater drum 17.

l'n the-space between the banks'll and 12 is aV siiperheater 22 having an inlet header 50 23 and an loutlet; header 24, vthe former bein g connected by a 4pipe superheater such as described, may be provided extending in from either side of the boiler, as shown itrF-ig. 3, in such case. the

--one of these drums and boiler embodying my invenl 5 and 6 `are views similar to Fig. 1, showing modifications, and Fig. i is a headers 1f) connected respec-V 25 tothe drinn 17. A'

14. A1925. Serial No. 9,069.

. pipe 25 being duplicated at the opposite ends of the drum 17.

' Above the superheatcr 22 is a reheater 26 li'aving'druins 27 on opposite sides ot' the setting, the steam to be leaving'the other. drum through pipes 28, the tubes ofthe reheater extending, inl theV illustrative form,

across the entire'setting. 4

Above the high ends of the tubes ofthe bank 11 is a fixed battle 29, abovethe-iriiier end of which isa. vertically slidable baiile suspended on exible members to a shaft 31 reheated entering controlled by ahand chain 32 from the exterior of the-boiler. j 1

Above the reheater 2,6 and at the low ends of, the 4tubes ofthe upper-bank 12is a fixed roof. baiiie 33, from the--inner'end of? which extendsl upwardly a transverse bathe-34, a second trans-verse ward across someA of the tubes of the upper bank12. With the parts shown in theY position of Fig. 1, the gases from the furnace 10I .pass across the bank heater 22, from thence to the right of the figure tothe high ends ofthe bank 12, and

from thence back and forth across thesewater tubes to thegas exit'G.

If the baille 30 is dropped vto its lowermost position, reheater 26v instead of being diverted therebaiie 35'4 extending down- 11, then over the superthe gases will pass over the fromgas is the case when the batlie is in they position shownn F ig. 1. and obviously any intermediate position ot the baille 30 will regulate the quanti-ty of the gases passing over the iclicater 26 while at the same time-,

the total amount of gases always pass over;

the superheater 22. v

By the arrangement,described, the ,superheater and reheater arg subjected to `gases which have passed over one bank only.l of

water'tubes and the degree of relieating maya-,1.

be readily controlled from the exterior of the boiler. Moreover, by reason ofthe sepa rate connections between the two'banksto the steam and water drum., the boiler may be driven at high ratings Without possibilit .v 1 of distiii-liance of thecireulation ineitlier i bank b v the steam generated in the other bank.

ilar to that of Fig.A tions of the iebeater 26 and the superheatcr The arrangement shown in Fig. 4 is siml 1, except that Athe posis 22 are reversed and both are laced over 'the roof baille 29,-so that the re ieater may be subjected to gases before they have contacted with the superheater. In this arrangement,- as inF ig. 1,' however, all of the gases will pass' over the superheater, regardless of the position ofthe baille 30. In the arrangement shown in Fig. 5,.the banks of tubes are the same as in F igs.v1, 2 and 3, except that they are inclined4 in opposite directions, the connections to` the steam and water drum being the same as in Figs.

1, 2 and 3.

The super-heater 22 and the reheater' 26. are arranged side by 4side in the space be#v tween the pair of banks and the baille'30 is` movable verticallyv between tliem.

In this arrangement, the gases from: the4v furnace pass across the lower bank 11 and then across the superheater 22. lVith the baliie in the position shown in Fig. 5, the@ gases then turn to the left and pass'over the reheater 26 and from thence liow upward and back and forth across the upper tubes 12 as before. When the baille 30 is lowered to its lower- -most position, the gases are diverted from the reheater 26 and any intermediate posif tion of the baille 30 will determine the proportion of the gases which will flow over the reheater. y, v

In the arrangement shown in F ig. 6, the tubesof the lower bank 40 are connected' to downtake headers if! and uptake headersv 42, these banks being connected as before.

f and as best shown in Fig. 3, through separate downcorners and upcomers with the Water drum 43. The upper bank 44 has its 'l tubes parallel to the tubes of the bank 40 and its downtnke headers 45' and uptake. headers 46 are connected by nipples and tubes in the usual manner to the drum 43. A row of tubes 4T connects the upper part of the downtake headers 41 with the lower part of the uptake headers 46 and another row of tubes 48 similarly connects the upper part of the downtalre headers Jal with the lower part of the uptake headers .46, the

' tubes 47 and 48 being spaced apart quite widely at their right-hand ends.`

, A xedroof -balile 49 extends above the` lower bank 40 and above this roof baille is the reheater 50 which has the same construction as before described. At the right ot' the reheater 50 is a superheater 51, which also has the same construction as before. de-

scribed, the steam entering the super-heater from the drum 43 through the pipe 52.

Slidingly supported on the tubes 4I is a movable baille 53 connected by flexible niembers to the shaft Vloperated by the hand. chain 55 from the exterior of the boiler. p

With the parts in the position shown in Fig. 6, the gases .first pass across the lower bank 40 and then across. the superheater 5l .2 reel-,674

and the rows `of tubes 47 and 48'and venter the higaenaof the bank 44,' rromjhaa 'they flow back and forth by reason of the transverse balles 56, 5'? to the gas exit 5S, a

lfixed roof baille 59 supportedon the' tubes 48 directing the, 'gases to this vhigh end of In the position ofv the movable'balile 534 tothe right of Fig. 6, then thegases, after passing over the superheater 51, will/pass over the, reheater 50 andaround the inner end of the baille 53' into the hi h end of the water tubes-44.4 Any interme rato position.-

of the baille 53 will determine the proportion of the gases passing. over the reheater 50, the total ainount passing at-.all times-eyeithe.

superheater 51.

lewin bei noted amy ai@ arrangement i.

shown iii. Fig. 6 provides not only lthe' 'most compact arrangement, but also-provides for the hot .gases beingy'direeted ntojthe high' ends' ofthe horizontallyiclined' water r tubes, so that the best arrangemex'itis rovided for; theV generation of steam, -an ,at

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the same time, the degree of reheating may be regulated. as desired without?.affecting the amount ofheat delivered to 'the super- 'I heater. y' ln the arrangementshown-.in Fig. 7,*tlie 'boiler is a double one, having three' u per P v steam andvwater drums 60, 61 and 62, the

lower banks 63,6?, being connected at their high ends to a central drum 64am). at their.

low endsto' downtake-headers 65, 65. 'Eacli of the upper banks'.66, 66 has downtake headers 67, G7 and uptukeheaders 68, 68, each .connected in the usual manner -to a drum or162, respectively, these drums, in

turn, being connected by suitable tubes'to the central drum 61... The downtalie headers 65 are connected to one of the'drums 60,

62 by pipes 68, 68a and the drum 64kA is con# nected to the :drum 60 by a plurality of. rows of tubes (two of suchl rows being-'shown) connects the drums 6l and 6l inside of the;

setting.

' The baliing and superheater and reheatei" arrangements in each of the parts of the double boiler are the'same, and 'aidescripg tion of one of them will be suilcient,

A fixed roof baiie'lextends from tlil'e lowntake headers' 65 toward tho center the boiler, and above this baiileA .isa'i'i heater 72 of the same construction as 'that heretofore described. 0n theopposite side' lio ffm

and substantially in horizontal. alignmentA with the reheater is a superh'eater 73, also of .the same construction as that -heretofore'de-- scribed.`

t The up l r bank 66'j-is provided: with'a xed roo vbaille 74 andtransverse'bellies rrangedto slide vertically between the 'iso ' reheutcr and superheater is a movable baille f movable baille will determine the quantity rehe eter ot the gases passing over the reheater 72.

lt will be understood that in the arrangement ot Fig. 7 the two parts ol' the 'superheater are connected in parallel with the steam and Water drinn ot the boiler and that the tivo parts of the reheaters are also pret'- erably connected in parallel.

lt will be understood that the arrange- .ments which are shown are merely illustrative and that the constructions may be Widely varied and also that certain features oit' the arrangement may be used either with or Without the other features illustrated.

, l claim l. A steam boiler having ban-ks of water tubes, said banks'being spaced apart to form a superheater chamber therebetween, iiXed battles to direct t" e furnace gases from one endet one bans across such space into the other bank, a p i. of heating devices in said space, a movable baille in said space and movable into either one of two extreme positions, said movabl le in one extreme position being interposein the path ol the gases norn'iany flowing across said space and across one of said heating,` devices, and in the other estreme position being positioned 'to direct all of the gases lirst across all ol one of said heating devices and then across all of the other of said heating devices, and means to move said movable ballle.

2. il steam boiler having banks of Water tubes, said banks being spaced apart to :torni a superhcater chamber therebetween, lined battles to direct the furnace gases from one end ot one oanl across such space into the otl bank, pair of heating devices in said space and each comprising a plin'alitg/,ot rows ot' tubes, a movable baille in said space and removed :troni heating` devices, said movable balde being,l movable into either one iol tivo estreme positions, said movable baille in one extreme position being interposed in the path of the gases normally flowing across said space and across one of said heating devices, and in 'the other estreme position being' positioned to direct all of the gases first across all ol one ol said heating,l (lf-:vices and then across all of the other of said heatingv devices, vand moans to more said movable ball ler having); banks ol horil `-I water tubes, said banks apart to torni a superheatei.'

therebetween, a superbi-:atei: and a in such space, liXed ballles above and below said Vconce 'to direct the grasos .in a path from one 'end ol.' the lower bank across said superheater and across said relie-after to one end ol the other bank, and a movable battle. in said space and movable into and out ol; the part ol the path ol the gasc.- llou'- ingy across .said rehcater While lnrmitting' .all oi thi` gases at all positions olf said movable baill'c to lion' aci-oss said supcrheatci' before contacting with said superheater, and lmeans to move said mo vable baille.

l. il steam boiler havinpr banks ot hori- Zontali \Y inclined water tubes, said banks bcini;l spaced apart to lorm a superheater chainber lherebctn'een` a super-heater and a re-V heater in such space, the tubes of the lowermost bank being exposed to the radiant heat of the lui-nace lor substantially their lull length, a fixed root baille above the lowermost bank to direct the gases toward the high ends ot' the water tubes thereof, said reheater being' positioned above said root baille and said superheater being positioned above the high ends of the water tubes of.

the loweri-nost bank` a longitudinal baille in the upper bank to direct the rases Jfrom said space into the high end of said bank, a baille in said space to divert a regulated quantity ol the ,gases from said reheater While permitting all of the gases to lloiv over said snoerheater, a movable baille in said sance and movable into either one el two extreme posi-v tions, said movable baille, in one extreme posit-ion, being interposed in the direct path ot the gases across said space and across said superhcater, and in the other cxtreme position, beingr interposed in the path of the gases across said space and across said reheater.

fl steam boiler having banks ot' horizontally inclined Water tubes, said banks being spaced apart to form a sup'erlieater chamber therrlnitween, a pair of heatingr devices in such space, a lixed roof baille above the lowermost bank to direct the gases toward the high. yends ot the water tubes ther-col", said devices beingpositioned respectively above said rootl baille and above the high end oi? the lower bank, a longitudinal baille in the upper bank to direct the gases from said space into the high end of the upper bankand ay horizontally movable roof baille above said space and movable from a position above one of said heating devices to a position above the other of said Vheating' devices, whereby the quantity of the gases liowingi` over the heating device above the iixed root baille may be varied while permitting all oll the gases to flow at all times over the other ot said heating devices, and means to move said movable baille.

(E. A steam boiler having banks of horizontally inclined Water tubes, said banks being spaced. apart to loi-m a superheater chamber therebetween, a pair of heating devices in .such space, a fixed root baille above the lowerinos bank to direct the gases toward the high ends of the Water tubes thereof, said devices being positioned respectively lli) above said roof bae andabove the high end. of thev lower 'bank a lon itudinal ,baille in the uppeic bank toV rect t e ases from said space mbo thehigh' end of t e upper bank, and a horizontally movable roof baile above said stpaee andmovable from a position above oneo .said heating devices to a position above the other of said heating deviees, whereby the quantity of the gases flowing over the heating device above the fixed roof baille Lemme may he variedfwhile permitting all of the 'gasesdo low at all times over the other of said, heating devices, and means to move said movable baille, said longitudinal baille being above and spaced from said movable baille to provide a gas flow spacev whensaiid movable baille is positioned Between the extreme positions lto which it can be moved.

ARTHUR,t 'SPY'ER 

